/*========================== begin_copyright_notice ============================

Copyright (C) 2019-2023 Intel Corporation

SPDX-License-Identifier: MIT

============================= end_copyright_notice ===========================*/

#include "Compiler/CISACodeGen/TimeStatsCounter.h"
#include "Compiler/IGCPassSupport.h"

#include "common/LLVMWarningsPush.hpp"
#include <llvm/Pass.h>
#include "common/LLVMWarningsPop.hpp"

using namespace llvm;
using namespace IGC;

namespace {
class TimeStatsCounter : public ModulePass {
  CodeGenContext *ctx = nullptr;
  COMPILE_TIME_INTERVALS interval{};
  TimeStatsCounterStartEndMode mode{};
  std::string igcPass{};
  TimeStatsCounterType type{};

public:
  static char ID;

  TimeStatsCounter() : ModulePass(ID) { initializeTimeStatsCounterPass(*PassRegistry::getPassRegistry()); }

  TimeStatsCounter(CodeGenContext *_ctx, COMPILE_TIME_INTERVALS _interval, TimeStatsCounterStartEndMode _mode)
      : ModulePass(ID), ctx(_ctx), interval(_interval), mode(_mode), type(STATS_COUNTER_ENUM_TYPE) {
    initializeTimeStatsCounterPass(*PassRegistry::getPassRegistry());
  }

  TimeStatsCounter(CodeGenContext *_ctx, const std::string &_igcPass, TimeStatsCounterStartEndMode _mode)
      : ModulePass(ID), ctx(_ctx), mode(_mode), igcPass(_igcPass), type(STATS_COUNTER_LLVM_PASS) {
    initializeTimeStatsCounterPass(*PassRegistry::getPassRegistry());
  }

  virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override { AU.setPreservesAll(); }

  bool runOnModule(Module &) override;

private:
};
} // End anonymous namespace

ModulePass *IGC::createTimeStatsCounterPass(CodeGenContext *_ctx, COMPILE_TIME_INTERVALS _interval,
                                            TimeStatsCounterStartEndMode _mode) {
  return new TimeStatsCounter(_ctx, _interval, _mode);
}

ModulePass *IGC::createTimeStatsIGCPass(CodeGenContext *_ctx, std::string _igcPass,
                                        TimeStatsCounterStartEndMode _mode) {
  return new TimeStatsCounter(_ctx, _igcPass, _mode);
}

char TimeStatsCounter::ID = 0;

#define PASS_FLAG "time-stats-counter"
#define PASS_DESC "TimeStatsCounter Start/Stop"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
namespace IGC {
IGC_INITIALIZE_PASS_BEGIN(TimeStatsCounter, PASS_FLAG, PASS_DESC, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_END(TimeStatsCounter, PASS_FLAG, PASS_DESC, PASS_CFG_ONLY, PASS_ANALYSIS)
} // namespace IGC

bool TimeStatsCounter::runOnModule(Module &F) {
  if (type == STATS_COUNTER_ENUM_TYPE) {
    if (mode == STATS_COUNTER_START) {
      COMPILER_TIME_START(ctx, interval);
    } else {
      COMPILER_TIME_END(ctx, interval);
    }
  } else {
    if (mode == STATS_COUNTER_START) {
      COMPILER_TIME_PASS_START(ctx, igcPass);
    } else {
      COMPILER_TIME_PASS_END(ctx, igcPass);
    }
  }
  return false;
}
